Chatham Islands Imported: 6/5 Glen
HB: we will have to poke around to see if this means salt water mudflats or e.g. large parts of swampy western Stewart Island. it's not clear to me right now.
RP:Hamish, i think this conflates the two together. the examples show what appears to be salt and fresh mud areas
HB: ok, so I guess we have to go with natural=mud rather than assume/assert anything about the tide or salt/fresh water. e.g. much of inland Stewart Island is knee deep muddy but fresh water. "mud" versus "wetlands" is a hard call, but to me wetlands implies vegetation which this layer should mostly lack, and the "mud" name matches :). Suggest to stick this one on the revisit list to double check/fix later.
Glen: Added revisit list action item as well
HB Aug 2012: I think we're vastly overthinking this one. Do I have a second for "natural=mud"?
2 Sep 2012: Glen and jaysonhoogy agree to natural=mud; activating for the mainland.
3 Jan 2013: Seems like a significant chunk of these are identical to the sand_poly geometries (for Northland at least). Hmm - "To keep the database in line with international entity specifications, the areas of 'sand and mud' will be captured using both sand and mud objects. Only those areas significant either by their size or location are held in the data and shown on the printed maps." - I've gone with mud over sand for these polygons, since imho it's more useful.